$ git clone -n https://src.fedoraproject.org/rpms/perl-App-cpanminus.git /var/lib/mock/f45-build-21712-587/root/chroot_tmpdir/scmroot/perl-App-cpanminus
Cloning into '/var/lib/mock/f45-build-21712-587/root/chroot_tmpdir/scmroot/perl-App-cpanminus'...
$ git fetch origin 2ac76125654ae65bc578fd11a0a28d0667db9244:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-App-cpanminus
 * [new ref]         2ac76125654ae65bc578fd11a0a28d0667db9244 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2ac7612 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild